| 摘要 |
PCT No. PCT/CH89/00030 Sec. 371 Date Dec. 7, 1989 Sec. 102(e) Date Dec. 7, 1989 PCT Filed Feb. 17, 1989 PCT Pub. No. WO89/09679 PCT Pub. Date Oct. 19, 1989.Situated on the upper end of a radially pivotable column (3) is a beam (11) arranged essentially at a right angle to it and pivotable approximately in the middle. Situated axially non-sliding on the front beam end (13) is a tool spindle (15) in a spindle head (14) connected to the beam (11) and drivable with a first driving means (17). Fixed to the lower end of the tool spindle (15) via an articulated head (20) is the upper machining disk (21). To bring the machining disk (21) to its working position the column (3), situated and guided in the column guiding housing (2), is designed to be liftable and lowerable via a lifting spindle (4) with a second driving means (6). A first adjusting means (29) connected on the rear beam end (28) serves to keep the beam (11) in an essentially horizontal position. A second adjusting justing means (30) also connected on the rear beam end (28) serves to control the working pressure of the machining disk (21). With the device according to the invention the suspension, the kind of bearing and drive of the machining disk (21) have been constructively resolved in a very simple way as a result of the omission of axial movability of the tool spindle (15). The working pressure of the machining disk (21) can be controlled extremely precisely. Lapping machines with this device are especially suitable for machining wafers, crystals and thin-walled ceramic tiles.
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